Rion NL-53 Instruction Manual
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Rion NL-53 Instruction Manual

Class 1 sound level meter, class 2 sound level meter
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Class 1 Sound Level Meter NL-53
Class 2 Sound Level Meter NL-43
Instruction Manual
Operation Guide

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Summary of Contents for Rion NL-53

  • Page 1 Class 1 Sound Level Meter NL-53 Class 2 Sound Level Meter NL-43 Instruction Manual Operation Guide...

  • Page 3: Organization Of The Nl-43/Nl-53 Instruction Manual

    Organization of the NL-43/NL-53 Instruction Manual There are four types of instruction manuals for Class 2 Sound Level Meter NL-43 and Class 1 Sound Level Meter NL-53. Quick Start Guide This manual describes the basic handling of Sound Level Meter NL-43/NL-53.

  • Page 4: Organization Of This Manual

    This manual describes the functions and operation method of the Class 2 Sound Level Meter NL-43 and Class 1 Sound Level Meter NL-53. When the measuring system is configured with other equipment, make sure to read the instruction manual of the equipment for how to operate the other equipment.

  • Page 5: Safety Precautions / Precautions For Use

    Safety Precautions / Precautions for Use Safety precautions The precautions shown here are intended to help you use the product safely and correctly, and to prevent harm and damage to you and other people. Incidents that could occur as a result of incorrect handling are divided into two categories: “WARNING”...
  • Page 6 The operating temperature for this device is -10°C to +50°C and the humidity range is 10% to 90% RH. * In the event of a product defect caused by RION, RION will repair or replace the device.

  • Page 7: Precautions For Use

    Safety Precautions / Precautions for Use Precautions for use • Avoid using and storing the product in places with high temperatures and humidity, or in places exposed to direct sunlight for long periods of time. • If there is a drastic change in the surrounding temperature, the product may malfunction due to internal condensation. •...
  • Page 8 • RION shall not be held accountable for the following incidental damages arising from the use or inability to use this product: Alteration or loss of recorded content, loss of business profits, or the interruption of business, etc.

  • Page 9: Table Of Contents

    Contents Organization of the NL-43/NL-53 Instruction Manual Organization of This Manual Safety Precautions / Precautions for Use Safety precautions ……………………………………………………………………………………………… 5 Precautions for use ……………………………………………………………………………………………… 7 Overview of This Product Terminology and Notation Name and Function of Each Part Turning on the Power Inserting the batteries ……………………………………………………………………………………...
  • Page 10 6.2.8 User Manual (QR code) ………………………………………………………………………… 41 Display …………………………………………………………………………………………………… 42 6.3.1 Bar Graph ………………………………………………………………………………………… 42 6.3.2 Leq Calc. ………………………………………………………………………………………… 43 6.3.3 Time-Level ……………………………………………………………………………………… 43 Measure …………………………………………………………………………………………………… 44 6.4.1 Sub Channel Settings …………………………………………………………………………… 45 6.4.2 Frequency Weighting …………………………………………………………………………… 45 6.4.3 Time Weighting ………………………………………………………………………………… 46 6.4.4 Windscreen Correction …………………………………………………………………………...
  • Page 11 7.1.1 Saving to internal memory ……………………………………………………………………… 70 7.1.2 Loading the saved data ………………………………………………………………………… 74 7.1.3 Deleting the saved data ………………………………………………………………………… 77 7.1.4 Copying data from the internal memory to the SD card …………………………………… 79 SD card …………………………………………………………………………………………………… 82 7.2.1 Formatting the SD card ………………………………………………………………………… 82 7.2.2 Transferring the data saved on the SD card to a computer …………………………………...

  • Page 12: Overview Of This Product

    • Class 2 Sound Level Meter NL-43 and Class 1 Sound Level Meter NL-53 are a class 1 sound level meter and a class 2 sound level meter that comply with the following laws and regulations related to sound level meters: the Measurement Act, IEC, JIS, and ANSI/ASA.
  • Page 13 Overview of This Product Measurement function Class 2 Sound Level Meter NL-43 / Class 1 Sound Level Meter NL-53 enables simultaneous measurement of up to four channels (Main channel, Sub1 to Sub3 channels) with selected time weighting and frequency weighting.

  • Page 14: Terminology And Notation

    Terminology and Notation Quantifiers and their names with Sound Level Meter NL-43/NL-53 Depending on whether the device has frequency weighting, there is no distinction between sound level and sound pressure level, with them both treated as the sound level. Time weighting...
  • Page 15 Terminology and Notation The notation of quantifiers in international standards and JIS with Sound Level Meter NL-43/NL-53 Quantifiers are taken from ISO 1996, IEC 61672-1, JIS C 1509-1 and JIS Z 8731. Notation and name Frequency ISO 1996 JIS C 1509-1...

  • Page 16: Name And Function Of Each Part

    Name and Function of Each Part Front Right side Microphone grid Microphone Preamplifi er START / STOP PAUSE / CONT Operation panel (Page 17) Name Description Microphone and The microphone and preamplifi er can be separated from the main unit. They can be preamplifi er installed at a distance from the main unit using an extension cable (optional).
  • Page 17 Name and Function of Each Part Operation panel START / STOP START / STOP PAUSE / CONT Name Description Indicator LED Lights or fl ashes red or blue depending on the operation and status of the device. Used when starting or ending measurement. Press the START/STOP key from the current state (sound level display) to enter the START/STOP key measurement state.
  • Page 18 Name and Function of Each Part Bottom AC/DC DC 5.7-15V Name Description Bottom cover A cover to protect the ports. Ports can be accessed by opening the bottom cover. This is the port for connecting AC Adapter NE-21P (optional) (input voltage of 100 V to 240 V, 50/60 Hz).
  • Page 19 Name and Function of Each Part Back Name Description Serial number label The serial numbers of the microphone, preamplifi er, and sound level meter are listed here. Tripod mounting screw This screw can be used to mount the device to a camera tripod. Install four AA batteries to use the device.

  • Page 20: Turning On The Power

    Turning on the Power The device can be operated with four AA batteries (alkaline batteries, Ni-MH rechargeable batteries), or, as an external power supply, AC Adapter NE-21P, Battery Pack BP-21A, or a USB power supply. The operating voltage is 5.7 V to 15 V (rated voltage 12 V). WARNING •...

  • Page 21: Inserting The Batteries

    Turning on the Power Inserting the batteries WARNING • Make sure to correctly insert the batteries with the polarities of the batteries “+” and “-” matching the marks. If the polarities are incorrect, the batteries may explode or leak. If you do not intend to use the device, remove the batteries to prevent leakage.
  • Page 22 The continuous operating time with batteries will vary depending on the battery manufacturer and type (model), the usage environment of the NL-43/NL-53, and the measurement conditions. For example, the operating time is approximately as follows for continuous measurement when set to Eco (the I/O setting is turned off, communication is turned off, Backlight Auto Off is set, etc.

  • Page 23: Connecting An External Power Supply

    Turning on the Power Connecting an external power supply The following connection methods are possible for operation using an external power supply. NE-21P Open the bottom cover AC/DC DC 5.7-15V External power supply port AC adapter NE-21P To 100 V to 240 V AC, 50/60 Hz power supply NC-98 series + CC-43J Open the bottom cover...
  • Page 24 Turning on the Power USB power supply (from mobile battery, computer, etc.) To power the device via USB, connect the USB Type-C cable to the USB port of the computer or USB charger. USB port (Type-C) Open the bottom cover AC/DC DC 5.7-15V To mobile battery...

  • Page 25: Backup Battery

    Turning on the Power Backup battery This device is equipped with a backup battery (rechargeable battery) for the clock. The rechargeable battery is charged when the power supply of the main unit is turned on. Even when the power is turned off, the battery will be charged if an external power supply is connected.

  • Page 26: Turning On/Off The Power

    Turning on the Power Turning on/off the power When turning on the power Press and hold the POWER key for several seconds. Indicator LED Release your fi nger from the POWER key when the startup screen appears. After the startup screen appears, the measurement screen appears. During startup, the indicator LED fl ashes red, blue, and pink in cycles.

  • Page 27: Reading The Display

    Reading the Display Sound level screen (main channel display) Note • While the actual display may not look exactly like those in the fi gures below, the explanation is based on the assumption that the same text will be displayed. Manual 24 25 Name...
  • Page 28 Reading the Display Name Description Calculation / measurement Displays the elapsed time since starting measurement in hours, minutes, and seconds. elapsed time Calculation / measurement time Displays the total measurement time set in the store settings. Touch to display the [Menu] screen. ▶...
  • Page 29 Reading the Display Name Description Displayed when [Ref. Signal Output] is turned on the [I/O] screen Reference signal output (Page 54). value display Displays the sound level for each channel (updated every second). Each time you touch the [info] on the menu ring, the displayed information will switch. [info] is displayed by touching [>] on the far right of the menu ring.
  • Page 30 Reading the Display Name Description Each time you touch [>] on the far right of the menu ring, the displayed menu switches. Sets the upper and lower limits of the bar graph. Range Freq. Sets the frequency weighting for each channel (Page 45). Weight Time Sets the time weighting for each channel (Page 46).
  • Page 31 Reading the Display Name Description Displays the power status. Check this indicator when using the device on batteries. As the batteries are used, the remaining level decreases. Full In this state, the backlight dims regardless of the brightness setting. Battery level / Power status Replace the batteries.

  • Page 32: Sound Level Screen (Sub Channel Display)

    Reading the Display Sound level screen (sub channel display) If you set one of the sub channels to [On] on the measurement screen, the sound level L value of the sub channels will be displayed on the measurement screen (Page 45). Main channel sound level L value...

  • Page 33: Calculated Value Screen

    Reading the Display Calculated value screen The measurement amount set to [On] under [Leq Calc.] on the [Display] screen can be displayed on the calculated values screen (Page 43). Each time you touch [Disp] on the menu ring, the display switches in the order of the sound levels screen » calculated values screen* »...

  • Page 34: Time-Level Screen

    Reading the Display Time-Level screen The time-level screen can be displayed by setting [Time-Level] on the [Display] screen to a setting other than [Off] (Page 43). Each time you touch [Disp] on the menu ring, the display switches in the order of the sound levels screen » calculated values screen* »...

  • Page 35: Message Display

    Reading the Display Message display When you press the START/STOP key or PAUSE/CONT key, one of the following messages will be displayed for about 1 second. Message Display Description Appears when the START/STOP key is pressed, and the measurement starts. Appears when the START/STOP key is pressed and measuring is fi nished.

  • Page 36: Setting Menu

    Setting Menu [Menu] screen Touch [Menu] on the measurement screen to display the [Menu] screen. Name Description System Displays the screen for setting items related to the system of the device (Page 37). Displays the screen for setting the calculated values and other items to be displayed on the Display measurement screen (Page 42).

  • Page 37: System

    Sets the user name, password, and key lock (Page 40). System Information Sets the device model, serial number, index, and program version (Page 41). User Manual (QR code) Displays the QR code to RION website for Instruction Manuals (Page 41).

  • Page 38: Time And Date

    Setting Menu 6.2.1 Time and Date Sets the year, month, day, hour, minute, and second of the built-in clock. Touch [Apply] to apply the settings. Note • Make sure to set the time before taking measurements. 6.2.2 LCD Settings Sets the brightness of the backlight and backlight auto-off time. Item Description Select the brightness of the backlight from 1 to 4.

  • Page 39: Power

    Setting Menu 6.2.3 Power Sets the type of batteries used in the device. Incorrect settings may shorten the continuous operation time on batteries. Item Description Alkaline Select this when using alkaline batteries. Battery Type Nickel Select this when using Ni-MH rechargeable batteries. 6.2.4 Eco Setting Switches on/off the Eco setting, which reduces power consumption.

  • Page 40: Sd Card

    Setting Menu 6.2.5 SD Card Checks the capacity and free space of the SD card inserted in the device, and formats the SD card. This can be selected only when an SD card is inserted. Item Description SD Card Capacity Displays the capacity of the SD card.

  • Page 41: System Information

    6.2.8 User Manual (QR code) Displays the QR code to RION website for Instruction Manuals. If you load it on your smartphone, etc., you will be taken to the website. *The above QR code is an image.

  • Page 42: Display

    Setting Menu Display Sets the measurement amount and other items displayed on the measurement screen. Name Description Bar Graph Sets the upper and lower limits of the bar graph (Page 42). Leq Calc. Sets the measurement amount to be displayed on the [Calculated value] screen (Page 43). Time-Level Sets whether to display Time-Level (Page 43).

  • Page 43: Leq Calc

    Setting Menu 6.3.2 Leq Calc. Sets the measurement amount to be displayed on the measurement screen. The setting switches between turning on/off each time you touch. calculation (statistical calculation for a certain interval such as ) is measured at the same time. Turn on the calculated and L peak value you want to display.

  • Page 44: Measure

    Setting Menu Measure Sets the number of measurement channels, correction and other items. Name Description Sub Channel Settings Sets On/Off for sub channel (Sub1 to Sub3) display (Page 45). Frequency Weighting Sets the frequency weighting for each channel (Page 45). Time Weighting Sets the time weighting for each channel (Page 46).

  • Page 45: Sub Channel Settings

    Setting Menu 6.4.1 Sub Channel Settings When set to [On], the sub channel sound level L is displayed on the measurement screen at the same time as the main channel. The calculated values are also displayed for each channel. Note •...

  • Page 46: Time Weighting

    Setting Menu 6.4.3 Time Weighting Sets the time weighting for each channel. Item Description Sets F (Fast). Select this when measuring general noise, especially fluctuating sound. This is usually used for measuring noise levels and sound levels. Sets S (Slow). Select this to pick up sounds with little fluctuation or the average values of fluctuating sounds.

  • Page 47: Diffuse S.f. Corr

    Setting Menu 6.4.5 Diffuse S.F. Corr. Compensates for variations in sensitivity and frequency response in diffuse sound fi elds for free fi elds. Set to [On] when measuring in a diffuse sound fi eld. For details, refer to the “Technical Guide” . Item Description Uses diffuse sound fi eld correction...

  • Page 48: Store

    Setting Menu Store Sets the store conditions, etc. for saving calculation results. Name Description Sets the store mode of store operations. Store Mode If the optional NX-43EX is not installed, it is not possible to select anything other than [Manual] (Page 49). Store Name Sets the identifi cation number of the store data (0000 to 9999) (Page 49).

  • Page 49: Store Mode

    Setting Menu 6.5.1 Store Mode Sets the store mode. Note • By installing the Function Extension Program NX-43EX, you can use the Auto Store and Timer Auto Store functions. 6.5.2 Store Name (the same for each mode) Sets the identifi cation number of the store data. Deletes all entered characters.

  • Page 50: Meas. Duration (Manual Mode)

    Setting Menu 6.5.4 Meas. Duration (Manual mode) Select the measurement time in Manual mode. If you select [User Setting], you can set the measurement time to a time of your choice. (s = seconds, m = minutes, h = hours) 6.5.5 User Setting (Manual mode) In [Meas.

  • Page 51: Back Erase (Manual Mode)

    Setting Menu 6.5.6 Back Erase (Manual mode) Sets the function to omit data immediately before the interruption in the calculation when the measurement is interrupted in Manual mode. Once this is set, the setting value is displayed at the top of the screen. Time where back erase is set Measured...

  • Page 52: Ln Mode (The Same For Each Mode)

    Setting Menu 6.5.8 LN Mode (the same for each mode) Sets the Sampling Data which would be used for calculation L and changes the Percentile 1 to 5 value for LN Mode (the value of Percentile 1 to 5 can be set from L0.1 to L99.9, 0.1 incremental steps).
  • Page 53 Setting Menu This screen is used to set the types of signals to be input and output externally. Name Description Ref. Signal Output Outputs the reference signal (Page 54). Signal Output Sets the AC and DC output (Page 54). I/O Port Sets the I/O port on the bottom of the device (Page 56).

  • Page 54: Ref. Signal Output

    Setting Menu 6.6.1 Ref. Signal Output When set to [On], a reference signal is output from inside the main unit and used for calibrating external devices and wave recording data. is displayed on the screen at this time. Frequency : 1 kHz Output Level : Bar graph range upper limit - 6 dB Note...
  • Page 55 Setting Menu AC OUT Item Description No AC signal is output. Main Outputs an AC signal corresponding to the sound pressure Sub1 waveform after frequency weighting. Sub2 Applies the frequency weighting set in the selected channel. Sub3 Outputs an AC signal corresponding to the sound pressure waveform after frequency weighting.

  • Page 56: I/O Port

    Setting Menu 6.6.3 I/O Port Sets the I/O port on the bottom of the device. Item Description Turns off the I/O setting of the I/O port. Measurement values can be acquired and settings can be Communication changed by using communication commands. The contents on the screen can be printed using the dedicated Printer printer DPU-414 or BL2-58.

  • Page 57: Usb

    Setting Menu 6.6.4 USB Sets the USB port on the bottom of the device. Item Description Turns off the I/O setting of the USB port. Measurement values can be acquired and settings can be Communication changed by using communication commands. Enables the transferring of data by making the computer Mass Storage recognize the SD card as a removable disk.

  • Page 58: Save/Load Settings

    Setting Menu Save/Load Settings By using a settings file, you can do the following: • By loading a prepared settings file on the internal memory or SD card, you can configure settings accurately and efficiently. • Even if settings are changed accidentally, the settings can be restored by loading a settings file on the internal memory or SD card.

  • Page 59: Saving Settings

    Setting Menu 6.7.1 Saving settings Touch [Save/Load Settings] on the [Menu] screen. Select where to save the setting fi le. Item Description Memory 1-5 Saves the current settings to the internal memory. Saves the current settings to the internal memory Startup (Internal) as a startup.
  • Page 60 Setting Menu When saving new settings, the screen shown on the right appears.

  • Page 61: Loading Settings

    Setting Menu 6.7.2 Loading settings Select the setting fi le you want to load. Note • Loading a settings fi le overwrites the current settings. • Before loading the settings fi le, we recommend saving the current settings if necessary. Touch [Load settings].

  • Page 62: Renaming The Settings File

    Setting Menu 6.7.3 Renaming the settings fi le Select the setting fi le you want to rename. Touch [Change the name]. The [Change the name] screen appears. Enter the name on the [Change the name] screen, and touch [Apply]. (Character limit: 1 to 8 characters)

  • Page 63: Deleting The Settings

    Setting Menu 6.7.4 Deleting the settings Select the setting fi le you want to delete. Touch [Delete]. The confi rmation screen appears. Note • Touch [Cancel] to return to the [Save/Load Settings] screen. Touch [YES] on the confi rmation screen. The selected setting fi le is deleted.

  • Page 64: Startup Settings

    Setting Menu 6.7.5 Startup settings If you save the settings in Startup, you can specify to start up the device with those settings. Select either [Startup (Internal)] or [Startup (SD)]. Item Description Saves the current settings to the internal memory Startup (Internal) as a startup.

  • Page 65: Changing The Language

    Setting Menu Changing the language The language used on this device can be set. Touch [Language] at the bottom of the [Menu] screen. Select a language, and touch [Apply]. The language setting is memorized, and so the message will be displayed in the set language even if the device is turned on and off again.

  • Page 66: Restoring Factory Default Settings

    Setting Menu Restoring factory default settings To return the settings to the default values, follow the procedure below. Touch [Save/Load Settings] at the bottom of the [Menu] screen. Touch [Default Settings]. Touch [YES] on the confi rmation screen. The setting returns to the default values (Page 67). Note •...
  • Page 67 Setting Menu Default settings The factory default settings for the main setting items are listed below. For information on how to restore the default values, refer to "Restoring factory default settings” (Page 66). Item Default settings Brightness Backlight Auto Off Power Battery Type Alkaline...
  • Page 68 Setting Menu Item Default settings Store Mode Manual Store Name 0000 Address 0001 Store Meas. Duration Back Erase Delay Time Ref. Signal Output AC OUT Signal Output DC OUT I/O Port...

  • Page 69: Store Operation

    Important • Use SD cards that are genuine and provided by RION. The performance of other cards is not guaranteed (Page 82). • Do not turn off the power or remove the SD card while in the middle of storing. Doing so may corrupt the data.

  • Page 70: Store Operation In Manual Mode

    Store Operation Store operation in Manual mode All calculated values except sound level Lp are considered as a single data set, and the measurer manually saves each data. When the person taking measurements performs the store operation after measuring, the calculated value that was measured and measurement conditions are saved together with the measurement start time.
  • Page 71 Store Operation On the [Store] screen, touch [Store Mode] and select [Manual]. Set the store name (only when an SD card is inserted). 1. On the [Store] screen, touch [Store Name]. The input screen for the store name appears. 2. Enter the store name (4-digit number). The setting range is from 0000 to 9999.
  • Page 72 Store Operation Set the store address 1. On the [Store] screen, touch [Address]. The input screen for the store address appears. 2. Enter the store address (4-digit number). The initial setting is 0001. If there is no problem, no change is required.
  • Page 73 Store Operation Touch [Back] or press the START/STOP key to return to the measurement screen. START / STOP PAUSE / CONT Press the START/STOP key on the measurement screen to start measurement. Press the START/STOP key again to end the measurement. After the measurement is completed, the confi rmation screen appears.

  • Page 74: Loading The Saved Data

    Store Operation 7.1.2 Loading the saved data Load the data saved to the internal memory in Manual mode. Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [Recall] on the [Menu] screen. The [Recall] screen appears. Select the location to which to save data from the [Recall] screen.
  • Page 75 Store Operation Touch the data to read. • The data is listed by store name. • [Meas. Date] is the date and time the measuring was started for the fi rst address measured with the same store name. • [Meas. Date] will not change even if the number of store addresses increases.
  • Page 76 Store Operation If there are six or more calculated values, on the menu ring, touch [>] and then touch [Disp] to switch to the next screen after the calculated values screen. • Touch [Menu] to check the measurement and store settings. •...

  • Page 77: Deleting The Saved Data

    Store Operation 7.1.3 Deleting the saved data Delete the data saved to the internal memory in Manual mode. Note • When deleting data, it is deleted on a store name basis. You cannot delete data for each address. Touch [Menu] on the measurement screen. The [Menu] screen appears.
  • Page 78 Store Operation Select the location to which to save data from the [Recall] screen. A list of saved data is displayed. Note • If no SD card is inserted, you can only select [Manual (Internal)]. • By installing the Function Extension Program NX-43EX, you can use the Auto Store and Timer Auto Store functions.

  • Page 79: Copying Data From The Internal Memory To The Sd Card

    Store Operation 7.1.4 Copying data from the internal memory to the SD card Copy the data saved on the internal memory to the SD card. Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [Recall] on the [Menu] screen. The [Recall] screen appears.
  • Page 80 Store Operation Touch the data to copy. Touch [Copy to the Card]. The store name entry screen for the copy destination appears. On the store name entry screen for the copy destination, enter the store name (4-digit number), and touch [Apply]. The setting range is from 0000 to 9999.
  • Page 81 Store Operation Data is copied from the internal memory to the SD card.

  • Page 82: Sd Card

    Store Operation SD card • We ask that you use an SD card purchased from RION for this device. SD cards other than those purchased from RION may not work correctly with this device. • The SD card inserted in the device is recognized as a removable disk by connecting the device to a computer with a USB Type-C cable.
  • Page 83 Store Operation Touch [SD Card] on the [System] screen. The [SD Card] screen appears. Touch [Format SD Card] on the [SD Card] screen. The confi rmation screen appears. Touch [YES]. The SD card will be formatted. Note • When formatting the SD card on a computer, under [File system], select [FAT] or [FAT32].

  • Page 84: Transferring The Data Saved On The Sd Card To A Computer

    Store Operation 7.2.2 Transferring the data saved on the SD card to a computer Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [I/O] on the [Menu] screen. The [I/O] screen appears. Touch [USB] on the [I/O] screen. The USB screen appears.
  • Page 85 Store Operation Touch [Mass Storage] on the [USB] screen, and touch [Apply]. Connect the main unit and the computer with a USB Type-C cable. Once recognized as a removable disk, measurement data, screenshots, setting conditions, calibration history data, etc. saved on the device can be displayed and checked in the USB drive folder.

  • Page 86: Saving The Screen

    Store Operation Saving the screen Touch [>] on the menu ring, and touch [Screen Shot]. The message "Screenshot was saved to the card." appears, and a screenshot of the displayed screen is saved to the SD card as bitmap data. For details, refer to “File organization”...
  • Page 87 Store Operation Checking the saved screens Check the screen data saved on the SD card. Touch [Recall] on the [Menu] screen. The [Recall] screen appears. On the [Recall] screen, touch [Screenshot (SD)]. A list of saved screen data is displayed.
  • Page 88 Store Operation Touch the data to read. Touch [View the data]. The saved screen appears. Touch the screen to return to...

  • Page 89: Connection With Peripheral Devices

    Connection with Peripheral Devices Attaching the windscreen When measuring noise outdoors in a windy environment or with a ventilation system present, the wind or air can come into contact with the microphone and generate wind noise, which can affect the measurement results. In such cases, wind/air noise can be reduced by installing the supplied Windscreen WS-10 to the microphone.
  • Page 90 Connection with Peripheral Devices Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [Measure] on the [Menu] screen. The [Measure] screen appears. Touch [Windscreen Correction] on the [Measure] screen. The windscreen selection screen appears.
  • Page 91 Connection with Peripheral Devices Select the windscreen to use, and touch [Apply]. The name of the selected windscreen is displayed at the top of the screen. Item Description Does not use windscreen correction Compensates for variations in sensitivity and frequency WS-10 response due to attachment of Windscreen WS-10.

  • Page 92: Diffuse Sound Field Correction Settings

    Connection with Peripheral Devices Diffuse sound fi eld correction settings If using the device in a diffuse sound fi eld, set this setting to [On]. This compensates for variations in sensitivity and frequency response in diffuse sound fi elds for free fi elds. For details, refer to the “Technical Guide”...
  • Page 93 Connection with Peripheral Devices Touch [Diffuse S.F. Corr.] on the [Measure] screen. The setting switches between turning on/off each time you touch. Item Description Uses diffuse sound fi eld correction Does not use diffuse sound fi eld correction When [On] is selected, [DF] is displayed at the top of the screen. Touch [Back] or press the START/STOP key to return to the measurement screen.

  • Page 94: Setting The Sd Card And Program Card

    • If you remove the SD card while writing out or loading data, the data on the SD card may become corrupted. • Use SD cards that are genuine and provided by RION. The performance of other cards is not guaranteed.

  • Page 95: Mounting On A Tripod

    Connection with Peripheral Devices Mounting on a tripod When taking measurements at a fixed point for a long time, mount the device to a camera tripod. CAUTION • Be careful not to drop the device when mounting it on a tripod. Also, ensure that the tripod does not fall over. •...

  • Page 96: Connecting The Microphone Extension Cable

    Connection with Peripheral Devices Connecting the microphone extension cable By using the microphone extension cable EC-04 series, the microphone can be installed in a location away from the device. Diffraction from the device and unwanted audio from the person taking measurements are reduced, enabling more precise measurements.
  • Page 97 Connection with Peripheral Devices Loosen the preamplifi er fi xing screw. Microphone Microphone grid Main unit Preamplifi er Fixing screw Remove the microphone and preamplifi er from the main unit. Important • Never separate the microphone and preamplifi er. Doing so may result in a malfunction. •...

  • Page 98: Connecting To A Printer

    Connection with Peripheral Devices Connecting to a printer By connecting a printer to the device, you can print hard copies of measurement screenshots and data saved to the internal memory or SD card. * The printer, recording paper, and printer cable CC-42P are optional. Connecting the device and printer with a printer cable Use a printer cable (optional) to connect the device and printer as follows: Important...
  • Page 99 Connection with Peripheral Devices Setting the I/O port of the device When using a printer (DPU-414/BL2-58), set the I/O ports of the device according to the following procedure. Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [I/O] on the [Menu] screen. The [I/O] screen appears.
  • Page 100 Connection with Peripheral Devices Touch [I/O Port] on the [I/O] screen. The [I/O Port] screen appears. Touch [Function] on the [I/O Port] screen. Select [Printer], and touch [Apply].
  • Page 101 Connection with Peripheral Devices Touch [Printer Model]. Select the applicable model, and touch [Apply].
  • Page 102 Connection with Peripheral Devices DPU-414 printer setting example If you turn on the power while holding down the ONLINE key of the printer, the printer status will be printed. The following is an example of what printing looks like when the soft DIP switches are set for the device (the actual printing font will be different).
  • Page 103 Connection with Peripheral Devices Printing the measurement screen Turn on the power to the device and the printer. Connect the device and the printer (Page 98). Touch [>] on the menu ring, and touch [Print]. The [Print] screen appears, and the measurement screen is printed.
  • Page 104 Connection with Peripheral Devices Printing the saved data Print the data saved on the internal memory or SD card. Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [Recall] on the [Menu] screen. The [Recall] screen appears.
  • Page 105 Connection with Peripheral Devices On the [Recall] screen, select the data you want to print. 1. Select the location where the data you want to print is stored. (Example: When printing Manual (SD) data) The data selection screen appears. Note •...
  • Page 106 Connection with Peripheral Devices Touch [>] on the menu ring, and touch [Print]. Enter the [Start Address] and [End Address], and touch [Print]. The [Print] screen appears, and the saved data is printed.

  • Page 107: Connecting The Ac/Dc Output Ports

    Connection with Peripheral Devices Connecting the AC/DC output ports 8.7.1 AC OUT (AC output) Set the channel for the frequency weighting and time weighting applied to the AC signal output from the AC/DC port on the bottom of the device. Touch [Menu] on the measurement screen.
  • Page 108 Connection with Peripheral Devices Touch [Signal Output] on the [I/O] screen. The [Signal Output] screen appears. Touch [AC OUT]. The [AC OUT] screen appears.
  • Page 109 Connection with Peripheral Devices Select the frequency weighting of the output AC signal. Item Description No AC signal is output. Main Outputs an AC signal corresponding to the sound Sub1 pressure waveform after frequency weighting. Applies the frequency weighting set in the selected Sub2 channel.
  • Page 110 Connection with Peripheral Devices AC output specifications 1 Vrms at the output level range Output voltage Example: 1 Vrms at 120 dB input when the output level range setting is 120 dB Output resistance 50 Ω Load impedance 10 kΩ or more BNC pin output cable CC-24/CC-24S (BNC-miniplug) Connection cable AC/DC Output Splitter Cable CC-43S...

  • Page 111: Dc Out (Dc Output)

    Connection with Peripheral Devices 8.7.2 DC OUT (DC output) Set the channel for the frequency weighting and time weighting applied to the DC signal output from the AC/DC port on the bottom of the device. Touch [Menu] on the measurement screen. The [Menu] screen appears.
  • Page 112 Connection with Peripheral Devices Touch [DC OUT]. The [DC OUT] screen appears. Select the channel that outputs the DC signal, and touch [Apply]. Item Description No DC signal is output. Main Outputs a DC signal corresponding to the sound Sub1 pressure waveform after frequency weighting.
  • Page 113 Connection with Peripheral Devices DC output specifications 2.5 V, 25 mV/dB at the output level range Output voltage Example: Outputs 2.5 V at 120 dB input when the output level range is set to 120 dB Output resistance 50 Ω Load impedance 10 kΩ...

  • Page 114: Connection With Level Recorder Or Data Recorder

    Connection with Peripheral Devices Connection with level recorder or data recorder Changes in sound levels over time can be recorded by connecting a level recorder to the device. Waveforms can also be recorded by connecting a data recorder to the device. Connect a level recorder (LR-07/LR-20A) or data recorder (DA-21/DA-20/DA-40) and the device with BNC pin output cable CC-24/CC-24S (optional) as follows.
  • Page 115 Connection with Peripheral Devices Sound level recording Record changes in the sound level over time as follows. Turn on the power to the device and the level recorder or data recorder. Note • For how to handle the level recorder and data recorder, refer to the instruction manual of each device. Connect the device to the level recorder or data recorder (Page 114).
  • Page 116 Connection with Peripheral Devices Touch [Signal Output] on the [I/O] screen. The [Signal Output] screen appears. Touch [AC OUT]. The [AC OUT] screen appears.
  • Page 117 Connection with Peripheral Devices Select the frequency weighting of the AC signal output to the level recorder or data recorder, and touch [Apply]. Item Description No AC signal is output. Main Outputs an AC signal corresponding to the sound Sub1 pressure waveform after frequency weighting.
  • Page 118 Connection with Peripheral Devices To calibrate an external device (level recorder or data recorder) a calibrator (Page 122) or reference signal is output (Page 54). Adjust the pen to record the position corresponding to the calibration value. • For example, if the calibration value is Recording pen 94 dB, adjust the pen to record at -6 dB from the upper limit of the scale.
  • Page 119 Connection with Peripheral Devices Set the output level range on the device. 1. Touch [Menu] on the measurement screen. The [Menu] screen appears. 2. Touch [I/O] on the [Menu] screen. The [I/O] screen appears. 3. Touch [Signal Output] on the [I/O] screen. The [Signal Output] screen appears.
  • Page 120 Connection with Peripheral Devices 4. Touch [Output Level Range] on the [Signal Output] screen. The [Output Level Range] screen appears. 5. Select the output level range, and touch [Apply]. Touch [Back] or press the START/STOP key to return to the measurement screen. Measure and record according to the instruction manual of the level recorder or data recorder.

  • Page 121: Computer Connection

    Connection with Peripheral Devices Computer connection Connect a computer and the device with a commercially available USB Type-C cable as follows. Note • When using the communication function to control the operation of the sound level meter with commands, on the [I/O] screen, set [USB] to [TCP].

  • Page 122: Calibration

    Calibration Before starting the measurement, calibrate the sound by inserting the microphone of the device into a sound calibrator (NC-75/74) or a pistonphone (NC-72B/72A). Adjust it so that the sound level L (indicated value) display of the device is equal to the sound level in the coupler of the calibrator.
  • Page 123 Calibration Gently and slowly push the microphone of the device POWER until it hits the back of the coupler. Important • Attach the sound calibrator or pistonphone to the microphone gently and slowly. • If it is pushed in or pulled out suddenly, the air pressure inside the coupler will change signifi cantly, which may damage the diaphragm of the microphone.
  • Page 124 Model Calibration value NL-43: 93.9 dB NC-75/74 NL-53: 94.0 dB NC-72B/72A Refer to the respective instruction manuals Note • Calculate the generated sound pressure level by substituting the following into the formula described in the NC-72B/72A instruction manual.
  • Page 125 Calibration Hist • Touch [Hist] to check up to 30 past calibration data items. • Touch [< Time] or [> Time] on the menu ring to display the calibration value for the date and time you want to check. • If you touch [Output History] on the menu ring, you can save the history to the SD card. •...

  • Page 126: Measurement

    Measurement When measuring with the device, all the measurement functions ( L and L ) of the peak device are performed at the same time. However, sub channels are measured only when sub channels are set to [On] in [Measure] on the [Menu] screen. Important •...
  • Page 127 Measurement Touch [System] on the [Menu] screen. The [System] screen appears. Touch [Time and Date] on the [System] screen. The [Time and Date] screen appears. Set the year, month, day, hour, minute, and second, and touch [Apply]. Note • This device has a calculation error of up to about 1 minute per month. Make sure to set the time before measuring. •...

  • Page 128: Checking The Sound Level ( L ) (Current State)

    Measurement 10.2 Checking the sound level ( L ) (current state) • The sound level ( L ) is displayed on the screen to show the current state, the bar graph is updated every 100 ms, and the level is updated every second.

  • Page 129: Measuring The Sound Level ( L ) (Measurement State)

    Measurement 10.3 Measuring the sound level ( L ) (measurement state) Measure the sound level. Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [Measure] on the [Menu] screen. The [Measure] screen appears. Touch [Frequency Weighting] on the [Measure] screen. The [Frequency Weighting] screen appears.
  • Page 130 Measurement Touch the channel to use, and select the frequency weighting. When measuring according to a standard such as JIS, set the time weighting according to the corresponding standard. Item Description Sets A-weighting. Sets C-weighting. Sets Z-weighting. For details on each item, see “Frequency Weighting” (Page 45). Return to the [Measure] screen, and touch [Time Weighting].
  • Page 131 Measurement Return to the [Menu] screen, and touch [Display]. The [Display] screen appears. Touch [Bar Graph] on the [Display] screen. The [Bar Graph] screen appears. Set the upper and lower limits of the bar graph. Item Description Upper Select the upper limit (dB) of the bar graph. Range The value that can be set is 70 dB to 130 dB in 10 dB increments.
  • Page 132 Measurement Touch [Back] or press the START/STOP key to return to the measurement screen. Press the START/STOP key to start the measurement. • The sound level ( L ) is displayed, and the bar graph and level are updated every second. •...

  • Page 133: Eq Calculation

    Measurement 10.4 L calculation Measure L and L peak Measuring the equivalent continuous sound level ( L Touch [Menu] on the measurement screen. The [Menu] screen appears. Touch [Measure] on the [Menu] screen. The [Measure] screen appears.
  • Page 134 Measurement Touch [Frequency Weighting] on the [Measure] screen. The [Frequency Weighting] screen appears. Note • The [Frequency Weighting] screen can also be displayed by touching [Freq. Weight] on the menu ring. Touch the channel to use, and select the frequency weighting.
  • Page 135 Measurement Touch the channel to use, and select the time weighting. Item Description Sets F (fast). Sets S (slow). For details on each item, see “Frequency Weighting” (Page 45). Note • The device uses high-speed sampling (20.8 µs) data for the sound pressure waveforms for L and L calculation, and so it is not affected...
  • Page 136 Measurement Touch [Upper Range] or [Lower Range], and then select a value. Item Description Upper Select the upper limit (dB) of the bar graph. Range The value that can be set is 70 dB to 130 dB in 10 dB increments. Lower Select the lower limit (dB) of the bar graph.
  • Page 137 Measurement Return to the [Menu] screen, and touch [Store]. The [Store] screen appears. On the [Store] screen, touch [Meas. Duration]. Item Description Select a measurement time. (s = seconds, m = minutes, h = hours) In [Meas. Duration], if you select [User Setting], [User Setting] appears on the [Store] screen, and you can set Displayed when [User Setting] User Setting...
  • Page 138 Measurement Select a measurement time, and touch [Apply]. Set [Back Erase] as necessary. 1. On the [Store] screen, touch [Back Erase]. The [Back Erase] screen appears.
  • Page 139 Measurement 2. Select the back erase time from Off, 1s, 3s, and 5s, and touch [Apply]. The set time is displayed at the top of the screen. Item Description Sets the function to omit data immediately before the Back Erase interruption in the calculation when the measurement is interrupted.
  • Page 140 Measurement Touch [Back] or press the START/STOP key to return to the measurement screen. START / STOP PAUSE / CONT Press the START/STOP key to start the measurement. At this point, previous measurement values are cleared. ▶ • symbol fl ashes during measurement, and the elapsed time is displayed.
  • Page 141 Measurement Touch [Switch display] on the menu ring to switch the display. The value labeled Leq is the equivalent continuous sound level. • If Leq is not displayed, ensure that the Leq display setting is set to [On] (Page 136). •...

  • Page 142: When Taking Measurements In A Dark Place

    Measurement 10.5 When taking measurements in a dark place When you touch the screen or press a key during automatic brightness change or “screen off” operation, the backlight of the LCD screen turns on, making it easier to see the display in dark environments. If you want to turn off the backlight while it is on, touch [Light Off] on the menu ring.
  • Page 143 Measurement Touch [LCD Settings] on the [System] screen. The [LCD Settings] screen appears. Set the brightness and lighting time of the backlight. Item Description Select the brightness of the backlight from 1 to 4. * Setting it to “4” , continuous operation time on batteries Brightness is shortened by about 50%, and setting it to “1”...

  • Page 144: File Organization

    Measurement 10.6 File organization * The extension .rnd is a store data le. NL-43 * NL-53 has the same le structure. Manual_0000 NL_0001_SLM_MAN_0000_0000.rnd Manual_0001 NL_0001_SLM_MAN_0001_0000.rnd Manual_9999 NL_0001_SLM_MAN_9999_0000.rnd Setup Set0001 Setting le: File where the setting information is recorded NL63Set.rms Startup le: File where the setting information is recorded Startup NL63Set.rms...

  • Page 145: How To Import The Data Into A Computer

    Measurement 10.7 How to import the data into a computer The stored data can be imported to a computer as a CSV fi le and opened with Microsoft Excel, etc. (Displaying Auto store data with Environmental Measurement Data Management Software AS-60 is very convenient.) Connect the SD card containing the stored data or the device to a computer (Page 121).
  • Page 146 Measurement Specify the data format and open the fi le. 1. Select [Delimited - Characters such as commas or tabs separate each fi eld.], and then click [Next]. 2. Under [Delimiters], check the [Comma] checkbox, and then click [Next].
  • Page 147 Measurement 3. Click [Finish] to open the store data fi le. • Screenshot example of Manual store data...

  • Page 148: Optional Programs

    This device supports various optional programs. Refer to the instruction manual of each optional program for how to use it. Extended Function Program Allows you to extend the functions of the Sound Level Meter NL-43/NL-53. NX-43EX Waveform recording program Enables users to record sounds while processing sound levels.

  • Page 149: Specifications

    JIS C 1516:2020 class 1 CE Marking • EMC Directive Directive 2014/30/EU EN 61326-1:2013 NL-43/NL-53 common • RoHS Directive Directive 2011/65/EU EN IEC 63000:2018 • Low Voltage Directive Directive 2014/35/EU EN 61010-1:2010/A1:2019 UKCA Marking, China RoHS, KC mark, VCCI Class B...
  • Page 150 25 dB to 138 dB operating range Linear operating range 113 dB NL-43 20 Hz to 8 kHz Measurement frequency range NL-53 10 Hz to 20 kHz Standard frequency 1 kHz Reference sound 94 dB pressure level Frequency A-weighting, C-weighting and Z-weighting...
  • Page 151 Specifications Device 3.5 inch TFT-LCD (with touch panel functionality) Touch panel Resistive film method (pressure-sensitive) Screen size QVGA (320 x 240) Display Backlight Light Off, Brightness can be set 1-4 Time-Level graph/ 100 ms bar graph update cycle Numeric value update cycle Touch panel and key input can be locked to prevent operation Key lock User name (up to 12 characters) and password (4 digits) can be set to unlock the device...
  • Page 152 Specifications 4 × AA batteries, power supply to DC jack and USB port Alkaline battery LR6: Approx. 12 hours Operating time Ni-MH rechargeable battery HR6: Approx. 12 hours (at 23°C, ECO setting) * The operating time varies depending on the device settings and the battery manufacturer NE-21P Power supply...
  • Page 153 Specifications Optional programs Extended Function Program NX-43EX Waveform Recording Program NX-43WR Octave∙1/3 Octave Real-time Analysis Program NX-43RT FFT Analysis Program NX-43FT 512MB SD Card MC-51SD1 2GB SD Card MC-20SD2 32GB SD Card MC-32SP3 AC adapter (100 V to 240 V AC) NE-21P Battery pack (Using four D alkaline batteries) BP-21A...
  • Page 154 • QR code is a registered trademark of DENSO WAVE Incorporated. • All company names and product names mentioned in this manual are trademarks or registered trademarks of their respective owners. https://www.rion.co.jp/english/ 3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan No. 66111 23-05...

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